What's going on here? (Vectors in ICE)

2016-02-03 Thread Tim Bolland 
Hi, I'm little stumped with this behavior in ICE. I'm using a static version of 
a mesh to pick up and store curve tangencies. I then use the reinterpret 
location node to grab the stored vectors on an animated copy of the mesh. This 
works as expected and I see the vectors have translated nicely. However If I 
emit particles from the animated mesh and grab the tangency data from the emit 
location, the vectors don't show up 'correctly'. It's as if it's reading the 
tangency from the initial static mesh, or something like that. 


Has anyone got any ideas what's going on?


Dropbox image:https://www.dropbox.com/s/nmomf3jkg2r81d8/VectorsAlign.jpg?dl=0

Regards,


Tim
p.s Sent again with dropbox link instead of attachment

Re: What's going on here? (Vectors in ICE)

2016-02-03 Thread Tim Bolland 
Hi Martin, 2015 SP2. The node no longer crashes which is good, but I have that 
behaviour still. I even checked in an older version and it happens there too. 

Cheers,

Tim

From: Martin Chatterjee 
Sent: Wednesday, February 03, 2016 5:32 PM
To: softimage@listproc.autodesk.com 
Subject: Re: What's going on here? (Vectors in ICE)

Hey there Tim, 

what Softimage version are you using?

AFAIK the Reinterpret Location node has been broken in 2015, but supposedly got 
fixed in 2015 SP2.  Maybe that's the reason?

Cheers, Martin

--
   Martin Chatterjee
 
[ Freelance Technical Director ]
[   http://www.chatterjee.de   ]
[ https://vimeo.com/chatterjee ] 

On Wed, Feb 3, 2016 at 2:10 PM, Tim Bolland <tim_boll...@hotmail.co.uk> wrote:

  Hi, I'm little stumped with this behavior in ICE. I'm using a static version 
of a mesh to pick up and store curve tangencies. I then use the reinterpret 
location node to grab the stored vectors on an animated copy of the mesh. This 
works as expected and I see the vectors have translated nicely. However If I 
emit particles from the animated mesh and grab the tangency data from the emit 
location, the vectors don't show up 'correctly'. It's as if it's reading the 
tangency from the initial static mesh, or something like that.  

  Has anyone got any ideas what's going on?

  Dropbox image:
  https://www.dropbox.com/s/nmomf3jkg2r81d8/VectorsAlign.jpg?dl=0

  Regards,

  Tim

  p.s Sent again with dropbox link instead of attachment

RE: What's going on here? (Vectors in ICE)

2016-02-03 Thread Tim Bolland 
Hey Dan, all the animation is point cache based so I don't think that's it. 
Could there be a work around with the "Point Reference Frame" node? I'm not 
using it but I have seen other compounds that have. Paul Smith's "Cage Strands" 
for example, does something similar and uses it. I've never used it before so 
I'm little in the dark about what it's doing.
Cheers,
Tim

From: danyarg...@gmail.com
Date: Wed, 3 Feb 2016 16:46:10 +
Subject: Re: What's going on here? (Vectors in ICE)
To: softimage@listproc.autodesk.com

Hey Tim,
If I'm not mistaken, you should be multiplying the re-interpreted vectors by 
the global transformation matrix of the re-interpret target object.  Or perhaps 
just it's rotation matrix...
DAN


On Wed, Feb 3, 2016 at 4:40 PM, Tim Bolland <tim_boll...@hotmail.co.uk> wrote:




Hi Martin, 2015 SP2. The node no longer crashes which is good, but I have 
that behaviour still. I even checked in an older version and it happens there 
too. 
 
Cheers,
 
Tim


 

From: Martin Chatterjee 

Sent: Wednesday, February 03, 2016 5:32 PM
To: softimage@listproc.autodesk.com 

Subject: Re: What's going on here? (Vectors in 
ICE)
 

Hey there Tim, 
 
what Softimage version are you using?
 
AFAIK the Reinterpret Location node has been broken in 2015, but supposedly 
got fixed in 2015 SP2.  Maybe that's the reason?
 
Cheers, Martin
 


--
   Martin 
Chatterjee
 
[ Freelance 
Technical Director ]
[   http://www.chatterjee.de   ]
[ https://vimeo.com/chatterjee ] 

 
On Wed, Feb 3, 2016 at 2:10 PM, Tim Bolland <tim_boll...@hotmail.co.uk> wrote:


  
  
  Hi, I'm little stumped with this behavior in ICE. I'm using a static 
  version of a mesh to pick up and store curve tangencies. I then use the 
  reinterpret location node to grab the stored vectors on an animated copy of 
  the mesh. This works as expected and I see the vectors have translated 
nicely. 
  However If I emit particles from the animated mesh and grab the tangency data 
  from the emit location, the vectors don't show up 'correctly'. It's as if 
it's 
  reading the tangency from the initial static mesh, or something like 
  that.  
   
  Has anyone got any ideas what's going on?
  
   
  Dropbox image:
  https://www.dropbox.com/s/nmomf3jkg2r81d8/VectorsAlign.jpg?dl=0
   
  Regards,
   
  Tim
   
  p.s Sent again with dropbox link instead of attachment

Re: What's going on here? (Vectors in ICE)

2016-02-03 Thread paul 
Yes, you’ll need to rotate the vectors. THe reinterpret node will find the 
correct location on the identical object, but it wont do anything to the actual 
vectors.

If the object is not deforming, you can just multiply them by the rotation part 
of the SRT of the transformed object.. 

If it IS deforming, you’ll have to use the pointreferenceframe (PRF) of the 
original static object, and the moving one. 
Invert the PRF of the static and multiply it by the moving.. then on the 
vectors “multiply vector by matrix” using that resulting matrix. and they 
should work fine. I think. without checking it makes sense anyway


From: Dan Yargici 
Sent: Wednesday, February 03, 2016 4:46 PM
To: softimage@listproc.autodesk.com 
Subject: Re: What's going on here? (Vectors in ICE)

Hey Tim, 

If I'm not mistaken, you should be multiplying the re-interpreted vectors by 
the global transformation matrix of the re-interpret target object.  Or perhaps 
just it's rotation matrix...

DAN



On Wed, Feb 3, 2016 at 4:40 PM, Tim Bolland <tim_boll...@hotmail.co.uk> wrote:

  Hi Martin, 2015 SP2. The node no longer crashes which is good, but I have 
that behaviour still. I even checked in an older version and it happens there 
too. 

  Cheers,

  Tim

  From: Martin Chatterjee 
  Sent: Wednesday, February 03, 2016 5:32 PM
  To: softimage@listproc.autodesk.com 
  Subject: Re: What's going on here? (Vectors in ICE)

  Hey there Tim, 

  what Softimage version are you using?

  AFAIK the Reinterpret Location node has been broken in 2015, but supposedly 
got fixed in 2015 SP2.  Maybe that's the reason?

  Cheers, Martin

  --
 Martin Chatterjee
   
  [ Freelance Technical Director ]
  [   http://www.chatterjee.de   ]
  [ https://vimeo.com/chatterjee ] 

  On Wed, Feb 3, 2016 at 2:10 PM, Tim Bolland <tim_boll...@hotmail.co.uk> wrote:

Hi, I'm little stumped with this behavior in ICE. I'm using a static 
version of a mesh to pick up and store curve tangencies. I then use the 
reinterpret location node to grab the stored vectors on an animated copy of the 
mesh. This works as expected and I see the vectors have translated nicely. 
However If I emit particles from the animated mesh and grab the tangency data 
from the emit location, the vectors don't show up 'correctly'. It's as if it's 
reading the tangency from the initial static mesh, or something like that.  

Has anyone got any ideas what's going on?

Dropbox image:
https://www.dropbox.com/s/nmomf3jkg2r81d8/VectorsAlign.jpg?dl=0

Regards,

Tim

p.s Sent again with dropbox link instead of attachment

Re: What's going on here? (Vectors in ICE)

2016-02-03 Thread Martin Chatterjee 
Hey there Tim,

what Softimage version are you using?

AFAIK the Reinterpret Location node has been broken in 2015, but supposedly
got fixed in 2015 SP2.  Maybe that's the reason?

Cheers, Martin

--
   Martin Chatterjee

[ Freelance Technical Director ]
[   http://www.chatterjee.de   ]
[ https://vimeo.com/chatterjee ]

On Wed, Feb 3, 2016 at 2:10 PM, Tim Bolland 
wrote:

> Hi, I'm little stumped with this behavior in ICE. I'm using a static
> version of a mesh to pick up and store curve tangencies. I then use the
> reinterpret location node to grab the stored vectors on an animated copy of
> the mesh. This works as expected and I see the vectors have translated
> nicely. However If I emit particles from the animated mesh and grab the
> tangency data from the emit location, the vectors don't show up
> 'correctly'. It's as if it's reading the tangency from the initial static
> mesh, or something like that.
>
> Has anyone got any ideas what's going on?
>
> Dropbox image:
> https://www.dropbox.com/s/nmomf3jkg2r81d8/VectorsAlign.jpg?dl=0
>
> Regards,
>
> Tim
>
> p.s Sent again with dropbox link instead of attachment
>
>
>
>

Re: What's going on here? (Vectors in ICE)

2016-02-03 Thread Martin Chatterjee 
Hey Tim,

yeah, I'd like to suggest storing your vectors in PointReference mode.

You can think of PointReferenceFrame as the local coordinate system of the
vertex:  Y being the normal direction and X pointing towards the first
neighbor vertex.

If you select a vertex of a polygon mesh, enter the Translate tool and
switch to "Local" then that's the coordinate system represented by
PointReferenceFrame.


*So, try something like this for storing :*

YourVectorPerPoint   >
 MultiplyVectorByMatrix  ---> SetData(self.crvTanAvg)
  /
GetData(self.PointReferenceFrame) >  Invert -/



*And then this for retrieving and applying:*

GetClosestLocation --->  GetData(crvTanAvg)  -->
 MultiplyVectorByMatrix  ---> SetData(self.tmp)
/
  GetData(self.PointReferenceFrame) ---/



Cheers, -M


--
   Martin Chatterjee

[ Freelance Technical Director ]
[   http://www.chatterjee.de   ]
[ https://vimeo.com/chatterjee ]

On Wed, Feb 3, 2016 at 5:53 PM, Tim Bolland <tim_boll...@hotmail.co.uk>
wrote:

> Hey Dan, all the animation is point cache based so I don't think that's
> it. Could there be a work around with the "Point Reference Frame" node? I'm
> not using it but I have seen other compounds that have. Paul Smith's "Cage
> Strands" for example, does something similar and uses it. I've never used
> it before so I'm little in the dark about what it's doing.
>
> Cheers,
>
> Tim
>
> ------
> From: danyarg...@gmail.com
> Date: Wed, 3 Feb 2016 16:46:10 +
> Subject: Re: What's going on here? (Vectors in ICE)
> To: softimage@listproc.autodesk.com
>
>
> Hey Tim,
>
> If I'm not mistaken, you should be multiplying the re-interpreted vectors
> by the global transformation matrix of the re-interpret target object.  Or
> perhaps just it's rotation matrix...
>
> DAN
>
>
>
> On Wed, Feb 3, 2016 at 4:40 PM, Tim Bolland <tim_boll...@hotmail.co.uk>
> wrote:
>
> Hi Martin, 2015 SP2. The node no longer crashes which is good, but I have
> that behaviour still. I even checked in an older version and it happens
> there too.
>
> Cheers,
>
> Tim
>
> *From:* Martin Chatterjee <martin.chatterjee.li...@googlemail.com>
> *Sent:* Wednesday, February 03, 2016 5:32 PM
> *To:* softimage@listproc.autodesk.com
> *Subject:* Re: What's going on here? (Vectors in ICE)
>
> Hey there Tim,
>
> what Softimage version are you using?
>
> AFAIK the Reinterpret Location node has been broken in 2015, but
> supposedly got fixed in 2015 SP2.  Maybe that's the reason?
>
> Cheers, Martin
>
> --
>Martin Chatterjee
>
> [ Freelance Technical Director ]
> [   http://www.chatterjee.de   ]
> [ https://vimeo.com/chatterjee ]
>
> On Wed, Feb 3, 2016 at 2:10 PM, Tim Bolland <tim_boll...@hotmail.co.uk>
> wrote:
>
> Hi, I'm little stumped with this behavior in ICE. I'm using a static
> version of a mesh to pick up and store curve tangencies. I then use the
> reinterpret location node to grab the stored vectors on an animated copy of
> the mesh. This works as expected and I see the vectors have translated
> nicely. However If I emit particles from the animated mesh and grab the
> tangency data from the emit location, the vectors don't show up
> 'correctly'. It's as if it's reading the tangency from the initial static
> mesh, or something like that.
>
> Has anyone got any ideas what's going on?
>
> Dropbox image:
> https://www.dropbox.com/s/nmomf3jkg2r81d8/VectorsAlign.jpg?dl=0
>
> Regards,
>
> Tim
>
> p.s Sent again with dropbox link instead of attachment
>
>
>
>
>
>
>
>

RE: What's going on here? (Vectors in ICE)

2016-02-03 Thread Tim Bolland 
Thank you guys! I'll take a look at these solutions :) 
Date: Wed, 3 Feb 2016 18:11:28 +0100
Subject: Re: What's going on here? (Vectors in ICE)
From: martin.chatterjee.li...@googlemail.com
To: softimage@listproc.autodesk.com

Hey Tim,
yeah, I'd like to suggest storing your vectors in PointReference mode. 
You can think of PointReferenceFrame as the local coordinate system of the 
vertex:  Y being the normal direction and X pointing towards the first neighbor 
vertex.
If you select a vertex of a polygon mesh, enter the Translate tool and switch 
to "Local" then that's the coordinate system represented by PointReferenceFrame.

So, try something like this for storing :
YourVectorPerPoint   >  
MultiplyVectorByMatrix  ---> SetData(self.crvTanAvg)
  /GetData(self.PointReferenceFrame) >  Invert 
-/


And then this for retrieving and applying:
GetClosestLocation --->  GetData(crvTanAvg)  -->  
MultiplyVectorByMatrix  ---> SetData(self.tmp)  
  /  
GetData(self.PointReferenceFrame) ---/

 Cheers, -M
--
   Martin Chatterjee
 
[ Freelance Technical Director ]
[   http://www.chatterjee.de   ][ https://vimeo.com/chatterjee ] 

On Wed, Feb 3, 2016 at 5:53 PM, Tim Bolland <tim_boll...@hotmail.co.uk> wrote:



Hey Dan, all the animation is point cache based so I don't think that's it. 
Could there be a work around with the "Point Reference Frame" node? I'm not 
using it but I have seen other compounds that have. Paul Smith's "Cage Strands" 
for example, does something similar and uses it. I've never used it before so 
I'm little in the dark about what it's doing.
Cheers,
Tim

From: danyarg...@gmail.com
Date: Wed, 3 Feb 2016 16:46:10 +0000
Subject: Re: What's going on here? (Vectors in ICE)
To: softimage@listproc.autodesk.com

Hey Tim,
If I'm not mistaken, you should be multiplying the re-interpreted vectors by 
the global transformation matrix of the re-interpret target object.  Or perhaps 
just it's rotation matrix...
DAN


On Wed, Feb 3, 2016 at 4:40 PM, Tim Bolland <tim_boll...@hotmail.co.uk> wrote:




Hi Martin, 2015 SP2. The node no longer crashes which is good, but I have 
that behaviour still. I even checked in an older version and it happens there 
too. 
 
Cheers,
 
Tim


 

From: Martin Chatterjee 

Sent: Wednesday, February 03, 2016 5:32 PM
To: softimage@listproc.autodesk.com 

Subject: Re: What's going on here? (Vectors in 
ICE)
 

Hey there Tim, 
 
what Softimage version are you using?
 
AFAIK the Reinterpret Location node has been broken in 2015, but supposedly 
got fixed in 2015 SP2.  Maybe that's the reason?
 
Cheers, Martin
 


--
   Martin 
Chatterjee
 
[ Freelance 
Technical Director ]
[   http://www.chatterjee.de   ]
[ https://vimeo.com/chatterjee ] 

 
On Wed, Feb 3, 2016 at 2:10 PM, Tim Bolland <tim_boll...@hotmail.co.uk> wrote:


  
  
  Hi, I'm little stumped with this behavior in ICE. I'm using a static 
  version of a mesh to pick up and store curve tangencies. I then use the 
  reinterpret location node to grab the stored vectors on an animated copy of 
  the mesh. This works as expected and I see the vectors have translated 
nicely. 
  However If I emit particles from the animated mesh and grab the tangency data 
  from the emit location, the vectors don't show up 'correctly'. It's as if 
it's 
  reading the tangency from the initial static mesh, or something like 
  that.  
   
  Has anyone got any ideas what's going on?
  
   
  Dropbox image:
  https://www.dropbox.com/s/nmomf3jkg2r81d8/VectorsAlign.jpg?dl=0
   
  Regards,
   
  Tim
   
  p.s Sent again with dropbox link instead of attachment